Smoke & Carbon Monoxide Detectors

Hardwired, linked smoke and CO detectors with 10-year sealed batteries, per California law.

Signs it's time

  • Detectors past 10 years old
  • Battery chirps
  • Alarms that go off one at a time
  • No CO alarm outside the bedrooms

How the job goes

  1. Check every detector's age and spot
  2. Swap in hardwired, linked units
  3. Add units where code calls for them
  4. Test that one alarm sets off all

What moves the price

  • Number of fixtures, devices or spots
  • Power nearby, or a new circuit
  • Ceilings, walls, attic access, patching
  • Your fixtures or ours
  • Permits: usually for new circuits, usually not for straight swaps

Permits for this work

Straight swaps usually need no permit. New circuits and outdoor, hot tub, pool, heat pump or range wiring usually do. The fee shows on your quote.

Brands we install

Kidde
First Alert
Google Nest

Brand names and logos are trademarks of their owners and are shown to identify the equipment we install and service. Chief Electric is an independent contractor and is not affiliated with these manufacturers.

The offer for this service

$100 Off
an Outage-Ready Check before fire season
Code CHIEF-FALL26
Cannot be combined with other offers. 1 per household. Residential use only. Show at time of service. Expires November 30, 2026.
Schedule Service

Questions we hear

How often should smoke and CO detectors be replaced?

Smoke every 10 years, CO every 7 to 10. Check the back.

Do I need CO detectors if I have gas appliances?

Yes. California requires them with gas appliances or an attached garage.

Do you charge for the quote?

No. An electrician looks at the job in person and quotes it, free.